... Wilid.Multivariate analysis and the linear correlation of the characters allowed the discriminatingtaxonomic criteria to be distinguished. The variation in peduncle and petiole ... in the sympatric and allopatric populations of Berry (Central France).Nineteen characters, divided into a total of 82 classes, were measured on each tree. Multivariateanalysis ... Quercus robur and Quercus petraea : a multivariate approach to the hybridproblem. 1 - data acquisition, analysis and interpretation. Watsonia, 12, 81-101.RusHTOtv B.S., 1979....